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PK0-005 Practice Question: During project planning, the project manager…
During project planning, the project manager wants to ensure that all work is defined and that no work is omitted. Which tool or technique should be used?
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Work breakdown structure (WBS)
The work breakdown structure is the primary tool for ensuring all work is identified and organized.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
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Responsibility assignment matrix
Why it's wrong here
A responsibility assignment matrix maps people to tasks; it documents ownership rather than decomposing deliverables into the work packages needed for completeness. It is tempting because RAMs genuinely clarify accountability, and that is the scenario where choosing one is correct.
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Gantt chart
Why it's wrong here
A Gantt chart displays schedule timing and task dependencies, which cannot establish that every deliverable has been decomposed into work packages. It is tempting because Gantt charts genuinely help sequence and track activities, and that is the scenario where selecting one is correct.
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Network diagram
Why it's wrong here
A network diagram sequences activities and their dependencies; it does not decompose deliverables, so it cannot confirm all work is captured. It is tempting because it defines task relationships, and it would be the right choice when the goal is to determine the critical path.
- ✓
Work breakdown structure (WBS)
Why this is correct
The work breakdown structure hierarchically decomposes the total project scope into deliverable-oriented components, ensuring every element of work is captured and nothing is omitted. This directly satisfies the planning constraint of defining all work comprehensively, making it the appropriate scope-definition technique for the project manager.
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